Deadly Sins – Lust, gluttony, greed, sloth, wrath, envy, and pride – These are the true stories of everyday individuals who are pushed beyond the limits of the law by seven deadly sins. Each episode navigates the twists and turns of three similarly sinful cases, piecing together their chilling conclusions along the way. (Source: Investigation Discovery)

A twisted teenager manipulates her guilt-ridden mother into allowing her supposedly "gay" friend to move in with them. But when the true nature of their relationship is outed, the teen seduces her friend to murder her mother.